Process of making matrices.



E. ALBERT.' PROCESS OF. MAKING MATRIGES.

APPLICATION PILED-AAPILZZ, 1905.

PATENTED MAR.1S, i906.

' dom of. Bavaria,

UNITED STATES PATENT .OFF-ICE.

l WEsEL, oFJNEW YQRK, N.' Y.4

Pn'ocess oF To all wil/mn; it maymon/cern:

jectA of the'Kin ofBaVa'ria, residing at 55 certain vnewanduseful Improvem ents in Proof i ess'es of Making'Matrices, of which the followingls` a specification.y

-This inventionrelates to'a pressing process whichisspeciall vor matrices for t 'e copying by V electrodeposition, of printing f press actssuccessive'ly on se .various constructional. forms of the 'f In the-methodsl of ployed the surfaces of the press whichexert the pressure are always greater-than the sur faces subjected to the 'pressure' ofthe ymate-'- rial to be pressed. Since the force ofthe res# sure `to be exertedvincreases directly Witll': increase in area of the ksurface to be pressed, veryheavy expensive presseswould be the surface to lbe treated is notl subjected at*` once. tothe preSSureofthe press, vbut the A arate partsof the surface tb be facehasbeen pressed.

Figure 1 shows diagramniatically a de ce serving 'for 'carrying' the method'inte face on the puch. Figs. 2 and 3 show constructional` orms with; several messing-sur# faces. Figs"." 4,t o 7 show inunder 'side view punch.

Figs'.- 8 and 9 show modifications of the punch with"severalppressing-surfaces.`

I the v example of'construction shown in,v

Fig. 1 the c plate c to be presse rests -on the printing-block d to be copied, which itself rests on the support e. The surface to be pressed of "the y shown isf three times the width, of the pressing-surface b of 'thepunch The plate must` accordingly b 'e pressed three times. .In

the descent of thefpu'nchv a; the surface 1 2 is 'first pressedl- Then byinovingthe plate -c and block d, or .the supporte withthe latecA and block d, or the' punch, or finally t e latter and the plate 'c andbloisk d, the surface 2 3cr the platee is brought beneath the punch adapted for pressing molds blocks or forms,v autotypes,

pressing heretofore ein-vthe f re-- quired for, relatively small sizes, and it-would not`be=possible1togo beyond a certain size.

, treated 'u'nti the wholesurg practice with one prefssingsur- Vforms shown in Figs.

punch agis provided one ress -ing-surface-b'. The d) plate c theexample sure on the material, this MAKING MATRICE-s f l -I 'a,'lso" ithaton the descent of thev saidfpunch i Be itknown that I', EUGEN'ALBERT, a subthissurface 2 3 is ressed, and finally, after one or the'other' of tii e two' parts, or.b oth, have beenagainl Inovedin the same manner, the' 6oA provided with six lpress.l b". .'Between'- these are spaces which are of double the Width 'of the pressing-surfaces, so thatin thisA caseialso' the plate c Inustbe pressed three times. In the descent 4of the punch-a intojthe position` shown the surfaces l' 2, 1"2, 1'/ 2, &c., are

parts, or b o-th, the'pressin "pressed After moving one or other of the two of the surfaces 2 3, 2f '37", &ci.,' takes place, an nally,.after again moving one 'or other of the saidparts, or, both, l.

Fig. 3 showsl another construction'al forni;Y pf the punch, in whichthe s aces between the n parts of the platec Which'are left elevated in .l the first' ressing and colpres's them When- -the puncli. vpresser-plate. l

a descends Aop the intercalated' lThe pressingfsurlacesofA the punch can: bef'of various forms.

form of Vnarrow strips, whichlie parallel er o'bliquely to the lateral edges of the punch a.

.both, after the first pressing can be avoided In the veo'nstructional j 4 and 5 they have the .The plressing-surfaces 'can also be ,arra'n ged liket' e squares in a chess-board, as shown in Figs. 6 and f7 The'Width-fof the pressing` surfaces can likewise be varied to. suit different"purposes. lFor the pressing` of '1 nat ricesfor'electrotype'swhenerrployingpunches ofthe-forms shown in 'F i sa 4 to 7 a width of.

the ressingsurfaces ofa out lthree 'millimelv .ters as ,beenfoundadvantagepus.. Ifsoftrnatel'iahfforexample,leaci-feisemployed,Whlch.l j .v

is used. for the production of matrices for electrtypes, this material has a tendency to yield laterally under the. ressure exerted by the pressing-surfaces. i s.preferably to be prevented by exerting an additional presl pressure being supple'rr'ien'tarytol that exerted by the pressing- ICO n `forms, autotypes, Woo

pressing a portion of the plate between the yss 'surfaces of the the printing block for form d, which a, additional -these auxiliary pressing-surfaces, and will be .be made continuous with the main pressing- `The action can be assisted by introducing 'a soft elastic -plate 'upon the form', advancing the matrixy y an intermittenti, movement, .and vcompunch, since so lon as the position'tolyield the etailsof require the greatest pressure, can never be. printed With the necessary sharpness, since the effects of a pressure can never be greater than the resistance-opposed thereto. j

l In the employment of lead or the like the pressure'exerted on-a definite point will o bviously not appear over the whole mass of the material, but only 'in the immediate neighborhood of the place Where lthe pressure vis exerted.` It-is therefore sufficient 1f the pressure additional to the main pressure be exertedjonly in this'zone of yielding. .For this in Fig. 8, in .addition to the pressing-surfaces b b2 to b5 of the punch l pressing surfaces ff2 a can be provided, which recede somewhat from themain pressing-surfaces.- Thus during the penetrationy of the main pressing-sur aces into theplate c the material below the main prUessing-surfaces will yield laterally and will accordingly rise up at the sides of the said main pressingfsurfaces, willl strike'fagainst material is in a thereby. reventedvvfromyielding further, so that in t e furtherI descent of the Punchthe material below the main pressing-surfaces will be sufficiently com ressed to obtain a est details.

sharp impression in the Instead of arranging thel auxiliary ressing'- surfaces in steps, as shown in Fig. 8, t ey may surfaces, Figr 9, and'gradually recede of the auxil inw ard larypressing-surfaces pressed. v

What I claim is; .1: The' process of.' forming matrices or molds for use in copyin printing blocks ,orv d blocks and the like, w ch process consists in placing the matrix-1 plate and form. together, advancing the 'mafy trix-plate and formbetween the pressing-sur'- faces by an intermittent movement, and cO'm-" layer between .theipunch and' the plate to be successive movements thereof. l

2. The process of forming, matrices or molds for-use in copyin printing blocks or forms,autot'ypeswood locks and the like,

which process consists in placing 'the matrixlate and form-'between the pressing-'surfaces 'forms autotypes woodwhichJ `adjacent to the `ing-surface, and applying a` main plate by a main plemental pressing diHerent portions of the plate each time the plate comes to rest between, the suc# cessive movements thereof.

3. The process of `forming matrices or molds for use in copyin printing blocks or locks and the like, process consists in placing the matrixplate upon the form, compressing a ortion of the matrix-plate while stationary, t en moving said plate and form relatively to the pressing-surface in order to bring another and applying a supplemental pressure to said n plate adjacent to the'portion subjected to the offset the lateral yielding of main ressure to said p ate.

l5. The process of forming matrices or molds for use in copying forms, autotypes, wood b ocks and the like, which process consists in compressing a portion 'of the matrix-plate by a main pressure, applying asu plemental pressure to said plate portion subjected to the main pressure 'to osetthe lateral yielding of said plate, movin said plate relatively to the pressing-sur ace jin order to bring another vportion ofjsaid plate within range of thepressressure anda supplementa pressure to an'ot er portion of the plate as before and soon until said:

plate hasre'ceived the complete impression.

6. The

locks and the like,

etween the pressingssurface and the matrix-plate, pressing aportion of the matrixpressure, and applying a suppressure to'said plate adjacent to the'po'rtion subjected to fthe main offset the lateral yielding of said p ate.

In witness whereof I havehereunto si 'ned my name in the presence of-two subscri ing witnesses.

EUGEN ALBERT.

Witnesses: i

ABRAHAM 'SCHLEsINGEm ULYssEsJ. Birv'sniirIaI.4

lprinting blocks or process of forming matrices or molds foruse in copyin vforms, autotypes, wood which rocess consists in employing ayielding4 'layer` b) ressure toportion of said plate within range ofthe pressprinting blocks or IOO 

